Frito Salad

1 cup mayo
Onion powder (to taste)
Garlic powder (to taste)
1 pkg ranch dressing mix
1/2 pkg taco seasoning mix
1/2 cup finely diced onion
2 cups whole kernel corn (drained)
1 cup shredded cheddar cheese
1 bag Fritos

Stir onion powder, garlic powder, ranch, and taco seasoning mixes into the mayo.  Add onion, corn, and cheese.  Chill in refrigerator for several hours.  When ready to serve, stir in Fritos.